ESG Family Signal Generators Hardkey and Softkey Reference
Phase Modulation
User’s Guide 4-79
Conversely, if the Trigger In Slope Neg Pos softkey is toggled in the
swept-sine AM, FM, or LF Out menus, it will cause the swept-sine
Φ
M
softkey to toggle also. This is also true for the
Ext Neg and Ext Pos step or
list sweep trigger selections.
Default Value: Pos
Softkey Location:
FM/ΦM hardkey > FM ΦM softkey ΦM > ΦM Waveform >
Swept-Sine > ΦM Sweep Trigger > Ext > Trigger In Polarity Neg Pos
Trigger Key
This softkey is one of the choices in the
Φ
M Sweep Trigger menu. With
Trigger Key selected, when you press the Trigger front panel key you
immediately trigger a single sweep of swept-sine phase modulation.
The
Trigger key has autorepeat capability. Hold it down and you will
repeatedly trigger sweeps until you release the key.
Softkey Location:
FM/ΦM hardkey > FM ΦM softkey ΦM > ΦM Waveform >
Swept-Sine > ΦM Sweep Trigger > Trigger Key
Trigger Out Polarity Neg Pos
This softkey toggles the polarity of the TTL signal that is output at the
rear panel TRIGGER OUT connector. When
Trigger Out Polarity Neg Pos is
set to
Pos, the output signal is asserted high (+5 V) at the start of the
swept-sine phase modulation sweep and low (0 V) when the sweep is
concluded. Setting
Trigger Out Polarity Neg Pos to Neg reverses the polarity,
where a high is 0 V and a low is +5 V.
This softkey is coupled to the
Trigger Out Polarity Neg Pos softkey in the
swept-sine AM, FM, and LF Out menus and the sweep/list menu. When
the polarity is toggled for this softkey in any one of these menus, it
affects all locations of the softkey.
Default Value: Pos
Softkey Location:
FM/ΦM hardkey > FM ΦM softkey ΦM > ΦM Waveform >
Swept-Sine > Trigger Out Polarity Neg Pos
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